One sided relationship (need advice!)

Hey guys, this a new relationship I’m currently in. The guy I’m with..uh, he’s been different. In the beginning he would always text me, call me late at night, hug me, show me so much affection and attention. But now as of maybe last week (especially since I was sick and I wasn’t at school for like 2 days) he’s been very distant. He walked, and SEEN ME EYE TO EYE MANY TIMES but does not talk to me at all, and even walks away from me. I have an event I have to be at and he said he’ll go but I feel like he just told me that and wasn’t serious. He doesn’t hang out me, barely even tells me hi at least in person anymore. It’s like I’m a ghost. Please I need help asap. I want to work and save my relationship but I might just listen to my friend’s advice: dump that bitch.